我正在使用REST api获取数据。 JSON行看起来像"temp_c":12,，我就像这样
int temp = (int) list.get("temp_c");
问题是行可以有int或double类型（如temp_c":12.5,）并且我有错误
java.lang.ClassCastException: java.lang.Integer cannot be cast to java.lang.Double
如果我使用
double temp = (double) list.get("temp_c");
我有错误
java.lang.ClassCastException: java.lang.Double cannot be cast to java.lang.Integer
答案 0 :(得分：3)
试试这个。
先改为if #available(iOS 10.0, *) {
UNUserNotificationCenter.current().delegate = self
} else {
// Fallback on earlier versions
}
// ios 10
if #available(iOS 10.0, *) {
let center = UNUserNotificationCenter.current()
center.requestAuthorization(options: [.alert, .sound,.badge]) { (granted, error) in
// actions based on whether notifications were authorized or not
}
UIApplication.shared.registerForRemoteNotifications()
}
// iOS 9 support
else if #available(iOS 9, *) {
UIApplication.shared.registerUserNotificationSettings(UIUserNotificationSettings(types: [.badge, .sound, .alert], categories: nil))
UIApplication.shared.registerForRemoteNotifications()
}
else
{
let settings = UIUserNotificationSettings(types: [.alert, .badge, .sound], categories: nil)
UIApplication.shared.registerUserNotificationSettings(settings)
UIApplication.shared.registerForRemoteNotifications()
}
}
，然后使用String解析
Double.parseDouble